A respected businessman, Earl Brooks, is secretly the notorious Thumbprint Killer, who has been attending AA meetings to control his addiction to murder. However, his alter-ego Marshall resurfaces, compelling him to kill again. Meanwhile, a detective investigating the murder is dealing with her own personal struggles, including a messy divorce and a vengeful ex-convict seeking revenge.

Mr. Brooks
As his dark past and inner turmoil consume him, a powerful businessman's grip on reality begins to slip, revealing a sinister side.